Driving-gearing for printing-presses.



PATENTED OCT. 10, 1905.

R. T. JOHNSTON.

DRIVING GEARING FOR PRINTING PRBSSBS.

APPLICATION FILED DBO 3, 1902.

4 SHBETSSHEBT 1.

No. 801,248. PATENTED OCT. 10, 1905. R. T. JOHNSTON.

DRIVING GEARING FOR PRINTING PRBSSES. APPLICATION FILED DBO. 3, 1902.

4 SHEETS-SHEET 2.

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7%. a. zraahnshm No. 801,248. PATENTED 001'. 10, 1905.

R. T. JOHNSTON.

DRIVING GEARING FOR PRINTING PRESS-ES.

APPLICATION FILED DEC. 3, 1902.

4 SHEETS-SHEET s.

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2/2. a M. Rznro/mao No. 801,248. PATENTED OCT. 10, 1905.

R. T. JOHNSTON.

DRIVING GEARING FOR PRINTING PRESSBS.

APPLICATION FILED DEC. 3, 1902.

4 SHEETS-SHEET 4.

Masses: Weider: 77 0. 8. R.TJ5/vnson- UNITED STATES PATENT option.-

ROBERT T. JOHNSTON, OF PLAINFIELD, NEW JERSEY, ASSIGNOR, BY MESNE ASSIGNMENTS, TO DETROIT TRUST CO., TRUSTEE, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

DRlVING-GEARING FOR PRlNTlNG-PRESSES.

Specification of Letters Patent."

Patented Oct. 10, 1905.

Original application filed January 13, 1899, Serial No. 702,062. Divided and this application filed December 3, 1902. Serial No. 133,696.

To all whom 2125 may concern:

Be it known that 1, ROBERT T. JOHNSTON, a citizen of the United States, residing at Plainfield, in the county of Union and State of New Jersey, have invented a new and useful Driving-Gearing for Printing-Presses, of which the following is a specification.

This application for patent is a division of my original application for patent, filed January 13, 1899, Serial No. 702,062, this divisional case being filed inpursuance of a Patent Office requirement.

The object of this invention is to provide a new and improved driving mechanism for printing-presses especially adapted for use in connection with a web-printing press, so arranged that the press can be easily put on full or slow speed, so that the press can be properly operated to splice a broken web and so that an abnormal strain on the web will be automatically compensated for.

To these ends the invention consists of the device described and claimed in this specification and illustrated in the accompanying four sheets of drawings, in which I have shown my improved driving mechanism applied to one form of traveling-cylinder web-perfecting printing-machine.

In said drawings, Figure 1 is a side elevation of said printing-machine with the omission of the driving mechanism shown in Fig. 2. Fig. 2 is an end view, on an enlarged scale, illustrating the construction of the drivingshaft. Fig. 3 is a plan view of the improved driving-gearing removed from the frame of the printing-machine. Fig. 4 is a partial sectional view of a part of said gearing, and Fig. 5 is a diagrammatic elevation of the gearing.

Referring to the drawings and in detail, designates the side frames of the machine, between which are arranged form-beds A and B.

C designates the cylinder-carriers, in which are journaled the impression-cylinders 31 and 38. Suitable form-inking rollers and distributing-rollers are arranged in the carriers at each side of each impression-cylinder to take ink from the ink-fountains E and deposit the same upon the forms. The web w is drawn from the web-roll IV and is led around guides 22 and 23 to the feeding-in drum 24'. Coacting with the drum 24 is a set of tapes 25,

which passes around suitable tape-pulleys 26, 27, and 28. The web then passes to a roller or guide 29, mounted in the carriers, up around a looping-roller 30, down around the first impression-cylinder 31, up around another looping-roller 32, then around a guide 33, also carried by the carriers. The web then passes around guides 34 and 35 at the end of the machine. The web is then led to a guide 36, up around a looping-roller 37, down around the second impression-cylinder 38, up around another looping-roller 39, then around a guide 40, the parts 36 to 40 being also mounted in the carriers. From the roller the Web is led to a guide 41, then to a continuously-running feeding-out drum 42, coacting with which is a set of tapes 43, which turn around tape pulleys 44, 45, and 46. From the feeding-out drum 42 the web is usually cut into two sections, one of which is led directly by rollers 121 and 123 to a longitudinal former F, while the other section is transferred laterally by suitable turner-bars and plicated with the first-named section on the former.

The driving mechanism is arranged as follows: represents the driving-shaft, to which power is applied, as hereinafter described. On this shaft is arranged a bevel-pinion 51, which engages and drives a large bevel-gear 52, which is mounted on the end of a vertical shaft 53, which carries a crank-pin which engages a yoke connecting the carriers, so that the cylinders will be reciprocated. Also mounted on the shaft 50 is a pinion 56, which meshes with an intermediate 57, which intermediate drives a gear 58, arranged on the shaft 59 of the feeding-in drum 24, as hereinafter described. Also engaging the pinion 56 is an intermediate gear 60, which drives a cam-shaft 61, which is geared to make two turns for each reciprocation of the cylinders. The cam-shaft 61 carries a screw-cam 62.

63 designates a longitudinal shaft extendingparallel to the movement of the carriers,which is journaled in brackets 64 and 65, secured to the frame 20. On the end of the shaft 63 is secured an arm 66, which has a roller 67 engaging the cam 62. Extending from the rear carrier C are brackets 68 and 69, between which is fitted a bush or sleeve 70, which is keyed on-said shaft 63. Extending from the bush is an arm 71, which connects by link 72 to an arm 73, mounted on shaft 7 1, journaled in the carriers, which shaft has walking-beam arms 75, (shown by dotted lines,) in which the looping-rollers 30 and 32 are journaled. Also extending from the bush 70 is an arm 76, which connects by link 77 to an arm 78, fitted on shaft 79, journaled in the carriers, which shaft carries walking-beam arms 80, in which the loopingrrollers 37 and 39 are journaled.

The press before described is substantially that shown and described in an application for patent filed January 13, 1899, by Henry A. Wise Wood, Serial No. 702,104. The operation is such that the web will be printed on both the forward and backward movements of the impression-cylinders and the web in the press will run continuously, except the small sections which lie directly around the peripheries of the two impression-cylinders, and these small sections will be shifted forward when the cylinders reverse off the forms at either end of the beds. 1 have shown this form of machine as one to which my improvements are especially applicable.

I will now describe the features of my improved driving mechanism which go to simplify and increase the efficiency of a driving mechanism for printing-machines.

It will be noticed from the foregoing description that the entire feeding and manipulating mechanism for the web is driven from the pinion 56, which is keyed on the shaft 50, and that the entire cylinder-driving mechanism is driven from the bevelpinion 51. On the shaft 50 I have arranged a tight pulley 150, a loose pulley 151, and a small loose pulley152. Also on the end of the shaft I arrange a fly or balance wheel 153. The shaft 50 is journaled in the side frame 20 and in a bracket 15 1, which extends therefrom, as shown. A shipper-rod 155 is arranged to pass across the machine, and the same may be operated from the front side of the machine by any of the usual lever mechanisms. The shipper carries belt-fingers 156. The same also carries a cam 157, bearing against which is a pivoted arm 158, which carries a brake 159, which bears on the balance-wheel 153. This mechanism is so arranged that when the belt is thrown on the loose pulley 151 the brake will be applied to the balance-wheel to stop quickly the machine, and so that when the belt is thrown on either pulley 150 or 152 the brake will be released. Secured to the loose pulley 152 is a pinion 160, which engages a gear 161, secured on the end of a shaft 162, which is journaled in a bracket 163, projecting up from the bracket 15 1. Secured to the gear 161 or to the shaft 162 is a pinion 16 1, which meshes with a gear 165, loosely journaled on the shaft 50. This gear 165 carries a pawl 166,11111811 engages aratchet-Wheel 167, secured rigidly upon the I gages said ratchet-wheel.

soneas shaft 50. The pawl 166 is spring-pressed and may be snapped in or out of operative position. Also secured on the shaft 162 is a pinion 168, which engages an intermediate 169, loosely journaled on the same stud 157 as the intermediate 57. Secured to the intermediate 169 is a pinion 170, which gears by a small intermediate 171, loosely mounted on a stud to a gear 172, loosely journaled on the shaft 59 of the feeding-in drum 2 1. Rigidly secured to the shaft 59 is a ratchet-wheel 173. The gear 172 carries a pawl 174-, which en- The gear 58 also carries a pawl 175, which engages said ratchet-wheel 173. The pawls 171 and 175 are disposed similarly relatively to the ratchetwheel, and these pawls are springpressed and may be snapped out of operative position, if desired. By this improved gearing the following operations can be accomplished: The press can be run at full speed by throwing the belt on the tight pulley 150,when the gearing for the feeding and web-manipulating devices will be driven through the pinion 56 and the cylinders will be reciprocated by means of the bevel-pinion 51. By throwing the belt onto the pulley 152 the press will be driven at a slow speed by the following train. The rotating of the pulley 152, which is loose on shaft 50, will turn the pinion 160. This will drive the gear 161, and thus pinion 164, will drive the gear 165. This provides for a reduction in gearing, so that the gear 165 will turn much slower than the pulley 152, and power willbe transmitted from the gear 165 to the shaft 50 by means of the pawl 166 engaging the ratchet-wheel 167, thus turning pinion 56 and bevel-pinion 51, and thus operating the press at a slow speed. Now if pawl 166 should be thrown out of operative position and the belt thrown onto the pulley 152 the shaft 50 would not be rotated, and thus the web feeding and manipulating devices and the cylinders would remain out of operation, but the shaft 162 would still receive motion and would transmit the same by gears 168, 169, 170, 171., and 172, pawl 174, and ratchet-wheel 172 to the feeding-in drum 2%, thus the feeding-in drum alone would be turned at a very slow speed. This is an advantageous construction in case of breakage.

The breakage of the web generally occurs in some part of the printing mechanism. By quickly stopping the machine and then driving the feeding-in drum only the incoming web can be advanced a few inches, so that the broken end thereof can be pasted or secured to the broken end of the web remaining in the press, and then the machine can be started slowly, so that the new end of the web can be drawn through the machine and associating mechanism without the necessity of rethreading the parts. This mechanism thus enables the press to be much more quickly started in case of breakage than in presses ordinarily built, where the machine has to be entirely rethreaded. It is also to be seen that the feeding-in device is driven under all conditions by a pawl-and-ratchet mechanism, so that at every operation the feeding-in drum is free to turn forward. This is advantageous, in that it is generally the custom in this class of machines to make the tension of the feedingout device adjustable, so that under different conditions the feeding-out device may demand a little more web than can be supplied by the feeding-in device. "hen this takes place in the old construction, the feeding-in device cannot supply the extra web sometimes required, and therefore the web in the press will be put under tension and broken. However, if the above construction is used by which the feeding-in device is driven under every condition through a pawl-and-rachet mechanism if an abnormal tension should be put upon the web in the machine from the feeding-in device the feeding-in drum can turn slightly forward through its ratchet mechanism, and thus the additional web sometimes required by the feeding-out device can be supplied without breaking. It will also be seen that the pawl mechanism is so arranged that no accident can take place. Thus when the belt is on pulley 152 and the pawl 166 is in engagement with the ratchet-wheel 167, although the gear 172 will be driven much slower than the gear 58, even if the pawl 174 should be left in operation, no harm will be done, because the ratchet-wheel 173 would simply turn away or forward relatively to the pawl 174:. hen the belt is on pulley 152 and the pawl 166 out of mesh, the only gearing that will turn is the train which drives the gear 172, and during this operation if the pawl 175 remains in operative position no harm will be done, as the ratchet-wheel 173 will simply be moved away therefrom by the pawl 174. Further, if the pawl 166 is left in operative position and the press started at full speed the rapid rotation of the ratchet-wheel 167 will throw pawl 166 out of operative position. Thus the normal position of the mechanism is with pawl 17a and 175 in operative position. This arrangement is made for two reasons first, so that in the regular opera tion of the machine clicking from pawl 166 is done away with; second, so that the machine is always in readiness to have instantaneous splicing if the web breaks. The pawls 174 and 175 are usually always left in operative position, the clicking of the pawl 174 being so immaterial that it may be neglected.

This gearing thus always provides for instant manipulation of the machine, no matter what condition exists and no matter what is to be done.

This gearing in its broad features is capable of general application-that is, to any kind of web-printing machine.

Having thus fully described the details of myinvention and the best method known to me for putting the same into practice, what I claim, and desire to secure by Letters Patent, is

1. The combination in a web-printing press of a feeding-in device, and gearing connected to drive the same in harmony with the press, and for driving the same by power independ ently of the press. I

2. The combination in a web-printing press of a feeding-in device, gearing having highspeed connections for turning the feeding-in device at high speed in harmony with the press, connections for turning the feeding-in device at low speed in harmony with the press, and for turning the feeding-in device by power independently of the press.

3. The combination in a web-printing press, of a feeding-in device, and two pawl-andratchet mechanisms for turning the feedingin devicein the same direction, one pawl-andratchet mechanism for turningthe feeding-in device at full speed in harmony with the press, and the other pawl-and-ratchet mechanism for turning the feeding-in device at slower speed.

1. In a web-printing press, the combination of a feedingin device, press-operating connections, and a driving-gearing comprising a driving-pulley having direct connection for operating the press, and having connection with the feeding-in device through a pawland-ratchet mechanism permitting the feeding-in device to be turned ahead to relieve abnormal tension of web in the press.

5. The combination in a web-printing press of a feeding device for feeding the Web forward to the press, a tight pulley. a loose pulley and a third pulley, gearing arranged so that when the belt is thrown onto the tight pulley, the press and the feeding device will be operated at full speed, and gearing including a pawl-and-ratchet mechanism arranged so that, when the belt is thrown on said third pulley, the press and the feeding device will be driven at a slow speed, and so that, when said pawl is disconnected, the feeding-in device alone Will be driven. I

6. The combination in a web-printing press of a web-feeding device for feeding the Web forward to the press, tight pulley 150 arranged to turn gearing as pinion 56 and bevel-pinion 51, which is further geared to drive the feeding device and press at full speed, pulley 152 connected by a reducing-train of gearing, and a pawl-and-ratchet mechanism to drive said pinion 56 and bevel-pinion 51 at a slow speed, and gearing from said reducing-train to the feeding-in device arranged so that, if said pawl is disconnected, the feeding-in device alone will be operated.

7. The combination in a web-printing press of a feeding-in device, gearing connected by a pawl-and-ratchet mechanism to drive the same in harmony with the press, and gearing connected by a pawl-and-ratchet mechanism IIO to said Web-feeding device arranged to turn said feeding-in device independently of the press.

8. The combination in a Web-printing press of a Web-feeding device for forwarding the Web to the press, a ratchet-Wheel 173 connected to said Web-feeding device, loose gears 58 and 172 each having made engaging said ratchet-Wheel, said gear 58 being so connected that the il'eeding-in device will be operated in harmony With the press, and the gear 172 being connected so that the feeding-in drum alone will be operated.

9. The combination in a Web-printing press of a feeding-in device for forwarding the web to the press, a tight pulley as 150, a pinion as 56 and a pinion as 51 geared so that, when the belt is on the tight pulley, the pinion 56 Will drive the various Web manipulating and feeding devices, including the feeding-in device, and the pinion 51 will drive the press, a pulley as 152 geared through a reducing-train, and a pawl-and-ratchet mechanism as 166 167 to turn said pinions 56 and 51 at a sloW speed, gearing from said reducing-train to a gear as 172, both said gear 172 and said pinion 56 beeo1,2as

ing geared to the feeding-in device by pawland-ratchet mechanism.

10. The combination in a \veb-prii'iting press of a Web-feeding device, drivingshaft 50 carrying tight pulley 150, loose pulley 151 and a third pulley 152, gearing from said shaft 50 arranged to turn the press and the various parts thereof, and a gear as 58 connected to the feeding-in device by a pawl-and-ratchet mechanism, a pinion 160 secured to turn With said pulley 152 and geared by a reducing-train as 161, 164 and 165, and pawl-andratchet mechanism 166 and 167 to turn said shaft 50 at a slow speed, and a reducing-gearing as 168, 169, 170 and 171, geared from said reducing-train to a gear 172 also connected by a pawl-and-ratchet mechanism to the feedingin device.

In testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses.

ROBERT '1. JOHNSTON. Vitnesses:

D. FOSTER UPDIKE, CARLOS G. GALLUP. 

